The light is continuously blinking and trying to figure out source of problem or what I need to replace. AAA appliance came over it was coming on for a few seconds and now it's not working at all any suggestions what they might have done.

If you paid a company to come over and fix your furnace I suggest you call them back since you should get what you paid for.

On the inside of the blower door panel there will be a legend on the blink codes. Look there for what it says